[Text field] Make highlight text colour respect the theme rather than M3 default

Resolves #4371

GIT_ORIGIN_REV_ID=c7da763ff3620ec96fa7a6982e3ea6be99618ff1
Co-authored-by: kendrickumstattd <[email protected]>
PiperOrigin-RevId: 711445558

Author: nicbell

lib/java/com/google/android/material/color/res/color/m3_highlighted_text.xml

@@ -16,5 +16,5 @@
 -->
 <!-- Material3 alternative to textColorHighlight for light theme -->
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:alpha="@dimen/material_emphasis_medium" android:color="@color/m3_sys_color_light_primary" />
+    <item android:alpha="@dimen/material_emphasis_medium" android:color="?attr/colorOnPrimaryContainer" />
 </selector>